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964a1b683a
cstr.c: get rid of exception * ext/-test-/string/cstr.c (bug_str_cstr_term_char): get rid of invalid byte sequence exception. git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_2@49650 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
57 lines
1.2 KiB
C
57 lines
1.2 KiB
C
#include "ruby.h"
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#include "ruby/encoding.h"
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static VALUE
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bug_str_cstr_term(VALUE str)
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{
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long len;
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char *s;
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int c;
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rb_encoding *enc;
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rb_str_modify(str);
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len = RSTRING_LEN(str);
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RSTRING_PTR(str)[len] = 'x';
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s = StringValueCStr(str);
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rb_gc();
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enc = rb_enc_get(str);
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c = rb_enc_codepoint(&s[len], &s[len+rb_enc_mbminlen(enc)], enc);
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return INT2NUM(c);
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}
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static VALUE
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bug_str_cstr_term_char(VALUE str)
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{
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long len;
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char *s;
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int c;
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rb_encoding *enc = rb_enc_get(str);
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RSTRING_GETMEM(str, s, len);
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s += len;
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len = rb_enc_mbminlen(enc);
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c = rb_enc_precise_mbclen(s, s + len, enc);
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if (!MBCLEN_CHARFOUND_P(c)) {
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c = (unsigned char)*s;
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}
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else {
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c = rb_enc_mbc_to_codepoint(s, s + len, enc);
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if (!c) return Qnil;
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}
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return rb_enc_uint_chr((unsigned int)c, enc);
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}
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static VALUE
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bug_str_s_cstr_term_char(VALUE self, VALUE str)
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{
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Check_Type(str, T_STRING);
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return bug_str_cstr_term_char(str);
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}
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void
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Init_cstr(VALUE klass)
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{
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rb_define_method(klass, "cstr_term", bug_str_cstr_term, 0);
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rb_define_method(klass, "cstr_term_char", bug_str_cstr_term_char, 0);
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rb_define_singleton_method(klass, "cstr_term_char", bug_str_s_cstr_term_char, 1);
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}
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